A Global Attractor in Some Discrete Contest Competition Models with Delay under the Effect of Periodic Stocking

Figure 1

This figure shows the magnitude of the characteristic roots of (4) depending on the location of the (𝑝,𝑞) values, where 𝑝=𝑓(𝑥) and 𝑞=−𝑥𝑓^′(𝑥). Also, |𝜆_1,ℎ|>1 and |𝜆_1,ℎ|>1 when 𝑝,𝑞>1;|𝜆_1,ℎ|<1 and |𝜆_1,ℎ|<1 when 𝑝<1 and 𝑞<1.